Pipe fitting



June 25, 1929.

T. H. BAcKUs PIPE FITTING Filed NOV. 4, 1927 Patented June 25, 1929.

THEODORE H. BACKUS, F ANN ARBOR, MICHIGAN.

PIPE FITTING.

Application led November 4, l1927. Serial No. 230,989.

The present invent-ion pertains to a novel pipe fitting of the type to which a plurality of waste or drain pipes are attached for coinniunication with a common stack pipe or outlet.

The principal object of the invention is tov provide a device of this character wherein the branch pipes connected thereto will have an appreciable fall to insure complete discharge and the avoidance of stagnant matter therein.

Another principal object of the invention is the provision of a device of this character constructed in such a manner that the material entering the fitting from the various drain pipes joined thereto will not flow back into other drain pipes. The positions of the various drain pipe connections are such that the material entering t-herefrom is induced to flow directly to the common outlet. The device is therefore at all times in a hygienic condition because of the fact that it does not permit accumulation therein or in the pipes connected thereto.

The invention is fully disclosed by way of example in the following description and in t-he accompanying drawing, in which- Figure 1 is an elevation of an installation in which the device of the invention is employed;

Fig. 2 is a plan view of the device taken on the line 2-2 of Figure 1;

Fig. 3 is a plan section on the line 3 3 of Figure 1;

Fig. 4 is a section on the line 4-4 of Figure 2; and

Fig. 5 is a transverse section on the line 5 5 of Figure 3.

Reference to these views will now be made by use of like characters which are employed to designate corresponding parts throughout.

In Figure 1 is illustrated an installation including a closet bowl, a base 2 and a urinal The bowl stands on a ioor 4, and the fitting 5 of the invention is supported beneath the Hoor by means of the piping presently to be described.

The body of the fitting is a chamber niember (5 having at one end a pair of vertically aligned bells 7 and S into which the stack or down pipe 9 is fitted. The top wall 1() of the chamber member is horizontal, and one of the lateral walls 11 is interiorly concave as clearly shown in Figure 3. The lateral wall 12 opposite the wall 11 is also straight and is provided with a pair of taps 13 and 14 for the connection of drain pipes 15 and 16 leading from the members 2 and 3 respectively. These taps enter at the flow line. considerably below the central plane of the chamber G, so that the maximum fall is attained. This feature is import-ant in apartment house construction wherein a limited height is provided for the fitting, and where it is essential to obtain complete discharge.

In the upper wall and near the center of the curved lateral wall 11 is formed another bell 17 into which is connected a vent pipe 18 passing through the roof of the building equipped with the installation. The chamber member 6 is formed with still another bell 19 at the end opposite the bell 7 or at the remaining end formed by the convergence of the walls 11 and 12. This bell 19 preferably has a horizontal axis directed towards the vent connection 17. The bowl 1 has an outlet pipe 2O connected to the bell 19, and the current from this pipe flows along the curved wall 11 before reaching the stack connection 8. The bottom wall 21 of the body is sloped downwardly from the bell 19 to the bell 8 in order to permit easier flow from the pipes 16 and 2O to the stack pipe.

The a ove mentioned course of the material issuing from the pipe 20 is indicated in dotted lines in Figure 3. It will be apparent that this direction of flow does not bring thecurrent close to the taps 13 and 14, and back fiow of the material into the pipes 15 and 16 is avoided. This feature is to be considered in contradistinction to other devices wherein there is a permanent danger of back ow and the resulting insanitary conditions.

As many taps 13 and 14 as desired may be provided in the device for attachment to a corresponding number of drain pipes. These pipes discharge upon the sloped bottom 21 which facilitatesfiow to the stack pipe 9.

Although a specific embodiment of the invention has been illustrated and described, it will be understood that various alterations in the details of construction, may be made without departing from the scope of the invention as indicated by the appended claims.

Vhat I claim is 1. A pipe fitting comprising a chamber member having an outwardly curved back wall and a front Wall opposite thereto, a bell for a drain pipe formed at one end of said curved wall and having its axis substantiall parallel to a tangent to said curved Wal,

bells formed in alignment in the chamber at the other end of said curved wall and lying perpendicular to the irst named bell, and taps formed in said front wall.

2. A pipe fitting comprising va chamber member having an outwardly curved bachl wall and a front wall opposite thereto, a bell for a drain pipe formed at one end of said curved wall and having its axis substantially parallel to a tangent to said curved wall, bells Jformed in alignment in the chamber at the other end of said curved wall and lying perpendicular to the vfirst named bell, and taps formed in said front wall, said taps lying nearer the lower edge than the upper edge of said front wall.

In testimony whereof I aix my signature. Y

THEODORE H. BAGKUS. 

